<template>
  <div>
    <el-button type="danger" @click="showEdit('add')">新增分类</el-button>
    <Table
      :columns="columns"
      :showPagination="false"
      :dataSource="tableData"
      :fetch="loadDataList"
      :options="tableOptions"
    >
      <template #cover="{ index, row }">
        <Cover :cover="row.cover"></Cover>
      </template>
      <template #op="{ index, row }">
        <div class="op">
          <a
            href="javascript:void(0)"
            class="a-link"
            @click="showEdit('update', row)"
            >修改</a
          >
          <el-divider direction="vertical" />
          <a href="javascript:void(0)" class="a-link" @click="del(row)">删除</a>
          <el-divider direction="vertical" />
          <a
            href="javascript:void(0)"
            :class="[index == 0 ? 'not-allow' : 'a-link']"
            @click="changeSort(index, 'up')"
            >上移</a
          >
          <el-divider direction="vertical" />
          <a
            href="javascript:void(0)"
            :class="[
              index == tableData.list.length - 1 ? 'not-allow' : 'a-link',
            ]"
            @click="changeSort(index, 'down')"
            >下移</a
          >
        </div>
      </template>
    </Table>
    <Dialog
      ref="dialogRef"
      :title="dialogConfig.title"
      :buttons="dialogConfig.buttons"
      width="500px"
      @close="dialogConfig.show = false"
    >
      <el-form
        :model="formData"
        :rules="rules"
        ref="formDataRef"
        label-width="80px"
      >
        <el-form-item label="名称" prop="categoryName">
          <el-input placeholder="请输入名称" v-model="formData.categoryName">
          </el-input>
        </el-form-item>
        <el-form-item label="封面" prop="cover">
          <CoverUpload v-model="formData.cover"></CoverUpload>
        </el-form-item>
        <el-form-item label="简介" prop="categoryDesc">
          <el-input
            v-model="formData.categoryDesc"
            type="textarea"
            placeholder="请输入简介"
            :autosize="{ minRows: 4, maxRows: 4 }"
          >
          </el-input>
        </el-form-item>
      </el-form>
    </Dialog>
  </div>
</template>
<script setup>
import { getCurrentInstance, ref, reactive, nextTick } from "vue"

const { proxy } = getCurrentInstance()

const api = {
  "loadDataList": "/category/loadAllCategory4Blog",
  "saveCategory": "/category/saveCategory4Blog",
  "delCategory": "category/delCategory4Blog",
  "changeSort": "category/changeCategorySort4Blog"
}
const columns = [{
  label: "封面",
  prop: "cover",
  width: 100,
  scopedSlots: "cover",
}, {
  label: "名称",
  prop: "categoryName",
  width: 200,
}, {
  label: "简介",
  prop: "categoryDesc",
}, {
  label: "博客数量",
  prop: "blogCount",
  width: 100,
}, {
  label: "操作",
  prop: "op",
  width: 200,
  scopedSlots: "op",
}]

const tableData = reactive({})
const tableOptions = {
  extHeight: 10,
}

const loadDataList = async () => {
  let result = await proxy.Request({
    url: api.loadDataList
  })
  if (!result) {
    return
  }
  tableData.list = result.data
}

//新增，修改
const dialogConfig = reactive({
  title: "标题",
  buttons: [{
    type: "danger",
    text: "确定",
    click: (e) => {
      submitForm()
    }
  }]
})
const dialogRef = ref(null)

const formData = reactive({})
const rules = {
  categoryName: [{ required: true, message: "请输入分类名称" }]
}
const formDataRef = ref()
const showEdit = (type, data) => {
  // dialogConfig.show = true
  console.log(dialogRef.value)
  dialogRef.value.showDialog(true)

  nextTick(() => {
    formDataRef.value.resetFields()
    if (type == "add") {
      dialogConfig.title = "新增分类"
    } else if (type == "update") {
      dialogConfig.title = "编辑分类"
      Object.assign(formData, data)
    }
  })
}
const submitForm = () => {
  formDataRef.value.validate(async (valid) => {
    if (!valid) {
      return
    }
    let params = {}
    Object.assign(params, formData)
    let result = await proxy.Request({
      url: api.saveCategory,
      params,
    })
    if (!result) {
      return
    }
    // dialogConfig.show = false
    dialogRef.value.showDialog(false)
    proxy.Message.success("保存成功")
    loadDataList()
  })
}

//删除
const del = (data) => {
  proxy.Confirm(`你确定要删除${data.categoryName}`, async () => {
    let result = await proxy.Request({
      url: api.delCategory,
      params: {
        categoryId: data.categoryId,
      }
    })
    if (!result) {
      return
    }
    loadDataList()
  })
}

//修改排序
const changeSort = async (index, type) => {
  let categoryList = tableData.list
  if (type === "down" && index === categoryList.length - 1 || type === "up" && index === 0) {
    return
  }
  let temp = categoryList[index]
  let number = type == "down" ? 1 : -1
  categoryList.splice(index, 1)
  categoryList.splice(index + number, 0, temp)
  let result = await proxy.Request({
    url: api.changeSort,
    dataType: "json",
    params: categoryList,
  })

  if (!result) {
    return
  }
  proxy.Message.success("重新排序成功")
  loadDataList()
}
</script>